高墩大跨连续刚构桥因主墩与上部结构固结,其减震控制设计存在一定的局限性,且主梁因地震作用会存在截面开裂及预应力束应力损失等现象。惯容系统是近年发展的结构减震控制新方式,特别是将惯容器与传统调谐质量阻尼器(tuned mass damper...高墩大跨连续刚构桥因主墩与上部结构固结,其减震控制设计存在一定的局限性,且主梁因地震作用会存在截面开裂及预应力束应力损失等现象。惯容系统是近年发展的结构减震控制新方式,特别是将惯容器与传统调谐质量阻尼器(tuned mass damper,TMD)结合,形成的调谐质量惯容阻尼器(tuned mass-damper-inerter,TMDI)。文中以某高墩大跨连续刚构桥为例,考虑施工过程结合Midas Civil与OpenSees软件建立非线性地震反应分析模型,以10条近断层脉冲波为输入,研究了分布式设置(多个)TMDI对其地震反应的控制效果。研究结果表明:地震动沿纵桥向输入时,TMDI可有效避免主梁顶板、底板开裂,但主梁腹板受力略有增大;沿横桥向输入时,TMDI则会明显降低主跨腹板受力;当地震动双向水平输入时,TMDI无论对主梁顶板、底板,还是主跨腹板的应力都有很好的减轻作用。在桥墩反应方面,墩顶最大位移平均减震率为52%(纵桥向)和21%(横桥向),纵桥向最大弯矩减震率是31%,在横桥向TMDI虽然会放大约10%的墩底弯矩,但它可控制桥墩的(弹塑性)残余位移反应。展开更多
Tuned mass damper inerter(TMDI)is a device that couples traditional tuned mass dampers(TMD)with an inertial device.The inertial device produces resistance proportional to the relative acceleration at its two ends thro...Tuned mass damper inerter(TMDI)is a device that couples traditional tuned mass dampers(TMD)with an inertial device.The inertial device produces resistance proportional to the relative acceleration at its two ends through its“inertial”constant.Due to its unique mechanical properties,TMDI has received widespread attention and application in the past twenty years.As different configurations are required in different practical situations,TMDI is still active in the research on vibration control and energy harvesting in structures.This paper provides a comprehensive review of the research status of TMDI.This work first examines the generation and important vibration control characteristics of TMDI.Then,the energy harvesting performance of electromagnetic tuned mass damper inerter(EM-TMDI)is discussed.This work emphasizes the formation of a passive dynamic vibration absorber by coupling traditional TMD with inertial devices.This paper also summarizes the design and implementation of optimal vibration control and energy harvesting for TMDI.Furthermore,this paper details the applications of TMDI in the fields of bridges and building engineering.Finally,this paper summarizes the necessity of research on tuned mass-damper-inertia,the challenges faced currently,and future research directions,such as control of parameters in electromagnetic energy harvesting TMDI systems and low-cost TMDI.展开更多
为解决传统调谐质量阻尼器(Tuned Mass Dampers,TMD)在低频大跨度桥梁中静位移过大的问题,提出采用调谐质量惯容阻尼器(Tuned Mass Damper Inerter,TMDI)提高大跨度桥梁的颤振临界风速.提出了一种适用于桥梁颤振控制的TMDI布置形式,并...为解决传统调谐质量阻尼器(Tuned Mass Dampers,TMD)在低频大跨度桥梁中静位移过大的问题,提出采用调谐质量惯容阻尼器(Tuned Mass Damper Inerter,TMDI)提高大跨度桥梁的颤振临界风速.提出了一种适用于桥梁颤振控制的TMDI布置形式,并基于二维耦合颤振理论,建立桥梁-TMDI系统运动微分方程,进而导出系数多项式特征方程.根据劳斯-赫尔维茨稳定性判据,计算颤振临界风速.以具有理想平板断面的简支梁为例,分析TMDI在桥梁颤振控制方面的有效性,并探讨了TMDI各参数设置对颤振控制的影响.研究结果表明,TMDI可以有效提高桥梁颤振临界风速.与传统TMD相比,虽然引入惯容可能会稍微削弱其控制效果,但却可以大幅降低质量块静位移,从而在实际工程中具有更高的实用价值.展开更多
为研究惯容系统位置对调谐质量阻尼器(tuned mass damper,TMD)减振性能的影响,首先基于动力学原理,采用定点理论对惯质调谐质量阻尼器(TMD-inerter,TMDI)进行参数优化,得到最优频率比和最优阻尼比解析解;其次讨论了频率比及阻尼比对结...为研究惯容系统位置对调谐质量阻尼器(tuned mass damper,TMD)减振性能的影响,首先基于动力学原理,采用定点理论对惯质调谐质量阻尼器(TMD-inerter,TMDI)进行参数优化,得到最优频率比和最优阻尼比解析解;其次讨论了频率比及阻尼比对结构振动特性的影响;最后对TMDI鲁棒性进行研究。结果表明:惯容系统连接位置对阻尼器吸振能力影响显著,与传统TMD和非接地TMDI相比,接地TMDI使主结构动力放大系数分别减小约8.4%、16.5%;接地TMDI调频宽度相比传统TMD提高约6%;在阻尼摄动范围内,接地TMDI减振系统动力放大系数增幅约1.5倍;接地TMDI具有更良好的鲁棒性,可为设计新型TMDI模型提供理论参考。展开更多
文摘高墩大跨连续刚构桥因主墩与上部结构固结,其减震控制设计存在一定的局限性,且主梁因地震作用会存在截面开裂及预应力束应力损失等现象。惯容系统是近年发展的结构减震控制新方式,特别是将惯容器与传统调谐质量阻尼器(tuned mass damper,TMD)结合,形成的调谐质量惯容阻尼器(tuned mass-damper-inerter,TMDI)。文中以某高墩大跨连续刚构桥为例,考虑施工过程结合Midas Civil与OpenSees软件建立非线性地震反应分析模型,以10条近断层脉冲波为输入,研究了分布式设置(多个)TMDI对其地震反应的控制效果。研究结果表明:地震动沿纵桥向输入时,TMDI可有效避免主梁顶板、底板开裂,但主梁腹板受力略有增大;沿横桥向输入时,TMDI则会明显降低主跨腹板受力;当地震动双向水平输入时,TMDI无论对主梁顶板、底板,还是主跨腹板的应力都有很好的减轻作用。在桥墩反应方面,墩顶最大位移平均减震率为52%(纵桥向)和21%(横桥向),纵桥向最大弯矩减震率是31%,在横桥向TMDI虽然会放大约10%的墩底弯矩,但它可控制桥墩的(弹塑性)残余位移反应。
基金funded by the Anhui Provincial Natural Science Foundation(Grant No.2008085QE245)the Natural Science Research Project of Higher Education Institutions in Anhui Province(Grant No.2022AH040045)+1 种基金the Project of Science and Technology Plan of Department of Housing and Urban-Rural Development of Anhui Province(Grant No.2021-YF22)the National College Student Innovation and Entrepreneurship Training Program Project(Grant No.202210878005).
文摘Tuned mass damper inerter(TMDI)is a device that couples traditional tuned mass dampers(TMD)with an inertial device.The inertial device produces resistance proportional to the relative acceleration at its two ends through its“inertial”constant.Due to its unique mechanical properties,TMDI has received widespread attention and application in the past twenty years.As different configurations are required in different practical situations,TMDI is still active in the research on vibration control and energy harvesting in structures.This paper provides a comprehensive review of the research status of TMDI.This work first examines the generation and important vibration control characteristics of TMDI.Then,the energy harvesting performance of electromagnetic tuned mass damper inerter(EM-TMDI)is discussed.This work emphasizes the formation of a passive dynamic vibration absorber by coupling traditional TMD with inertial devices.This paper also summarizes the design and implementation of optimal vibration control and energy harvesting for TMDI.Furthermore,this paper details the applications of TMDI in the fields of bridges and building engineering.Finally,this paper summarizes the necessity of research on tuned mass-damper-inertia,the challenges faced currently,and future research directions,such as control of parameters in electromagnetic energy harvesting TMDI systems and low-cost TMDI.
文摘为解决传统调谐质量阻尼器(Tuned Mass Dampers,TMD)在低频大跨度桥梁中静位移过大的问题,提出采用调谐质量惯容阻尼器(Tuned Mass Damper Inerter,TMDI)提高大跨度桥梁的颤振临界风速.提出了一种适用于桥梁颤振控制的TMDI布置形式,并基于二维耦合颤振理论,建立桥梁-TMDI系统运动微分方程,进而导出系数多项式特征方程.根据劳斯-赫尔维茨稳定性判据,计算颤振临界风速.以具有理想平板断面的简支梁为例,分析TMDI在桥梁颤振控制方面的有效性,并探讨了TMDI各参数设置对颤振控制的影响.研究结果表明,TMDI可以有效提高桥梁颤振临界风速.与传统TMD相比,虽然引入惯容可能会稍微削弱其控制效果,但却可以大幅降低质量块静位移,从而在实际工程中具有更高的实用价值.
文摘为研究惯容系统位置对调谐质量阻尼器(tuned mass damper,TMD)减振性能的影响,首先基于动力学原理,采用定点理论对惯质调谐质量阻尼器(TMD-inerter,TMDI)进行参数优化,得到最优频率比和最优阻尼比解析解;其次讨论了频率比及阻尼比对结构振动特性的影响;最后对TMDI鲁棒性进行研究。结果表明:惯容系统连接位置对阻尼器吸振能力影响显著,与传统TMD和非接地TMDI相比,接地TMDI使主结构动力放大系数分别减小约8.4%、16.5%;接地TMDI调频宽度相比传统TMD提高约6%;在阻尼摄动范围内,接地TMDI减振系统动力放大系数增幅约1.5倍;接地TMDI具有更良好的鲁棒性,可为设计新型TMDI模型提供理论参考。
